Speed-control governor



Feb. -9 1926. 1,572,195

c. c. FARMER SPEED CONTROL GOVERNOR Filed April 8, 1925 INVENTOR CLYDE C. FARMER ATTORNEY Patented Feb. 9, 1926.

UNITED 'STATES PATENT OFFICE.

GLYIDE C. FARMER, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO THE WESTING- HOUSE AIR BRAKE COMPANY, OF WILMERDING, PENNSYLVANIA, A CORPORA- TION OF PENNSYLVANIA.

. srnnnoonrnor. GOVERNOR.

Application filed April 8, 1925. Serial No. 21,533.

7 '0 all whom it may concern Be it known that I, CLYDE C. FARMER, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Speed-Control Governors, of which the following is a specilication.

This invention relates to train speed control apparatus and more particularly to a governor device therefor.

On some railroads, the locomotives are from time to'time alternately used in passenger and freight service, and the operating rules of the railroad may prescribe different speed limits, to be maintained in the different classes of service. For this reason it is desirable, where speed control apparatus is applied to the locomotives, to have means for regulating said apparatus, so

that difierent speed limits may be maintained, according to the class of service in which the locomotives are used.

The principal object of my invention is to provide improved means for adjusting speed control apparatus so that different speed limits may be imposed on the train according to the class of service in which the locomotive is being used.

In the accompanying drawing; Fig. 1 is a sectional view of a speed control governor with m invention embodied therein; Fig. 2 a sectlon taken on the line 22 of Fig. 1; Fig. 3 a section taken on the line 8-3 of Fig. 2; and Fig. 4 a section taken on line H of Fig. 2.

As shown in the drawing, the device may comprise a casing 1 having a partition 2, in which is provided a bearing for one end of a main rotat ng member 3, the opposite end of which carries a pinion i, said pinion-being operatively connected to the locomotive axle.

Pivotally mounted on the member 3 are the usual weighted governor arms 5 having rollers 6, which are adapted to engage a sleeve 7, said sleeve being mounted on a shaft 9, which has a bearing at one end in the casing 1 and at the other end in the rotating member 3. Interposed between the sleeve 7 and a flanged portion of the rotating member 3 is a spring 8, which opposes movement of said sleeve toward the right.

The shaft 9 is provided with a crosshead 10 in which are disposed valve tappets 11 and 11 of which there may be any number,

two only being shown for the purpose of illustration. greater distance from the righthand face of the crosshead 10 than does the tappet 11, and said tappets are alternately adapted, according tothe rotative position of the crosshead 10 and upon movement thereof to the right or to the left, to engage the stem of a speed control valve 12 disposed in the casing 1;

Attached to the casing 1 is a bracket por tion 24: in which is mounted a shaft 13. Secured to the protruding end of the shaft 13 is a handle 14 having a spring pressed latch 15, which is adapted in one position The tappet 11? projects at a of said handle, to register with a hole 16 in a latch'plate 17 secured to the bracket portion and in another position of the handle to engage a hole 18 in said latch plate.

Mounted on the shaft 13 is a sleeve 19 which has downwardly extending arms 20 and is provided with a squared opening adapted to receive a correspondingly shaped portion of the shaft 13, so that a rotation of the shaft 13 will also rotate the sleeve 19. Mounted in the arms 20 is a pin 21 carrying an elongated square block 22, which is adapted to engage, with a sliding lit, a correspondingly shaped recess 23' in the crosshead 10 so as to thereby furnish a guide for and permit a lateral movement of said crosshead.

If the locomotive is to be used in passenger service, the handle 14 is placed in the position shown in the drawing, so that spring pressed latch 15 registers with the hole 16 in the latch plate. The cross head 10 is now in a position sothat valve tappet 11 is in line with the stem of valve 12, and as the member 3 is rotated by the operative con nection to the locomotive axle, the arms 5 will act through the sleeve 7 to move the cross head 10 to the right and cause tappet 11 to engage the stem of the valve 12.

If, however, the locomotive is to be used a lesser movement of tlie crosshead 10- to the right will cause the tappet 11 to engage the stem of the valve 12 so as to thereby unseat said valve.

Having now described my inventiomwhat I claim as new and desire to secure by Letters Patent,1is:-

1. The combination with a speed gover-- nor provided withalongitudinally movableand rotatable crosshead, ofavalve, a plurality of tappets carried by said crosshead and each adapted rtolengage said valve at (Lif ferent rotative positions of thecrosshead upon longitudinalVmovement, of thecrossr head and means for rotating; said crosshead.

2. The combination with a speed governor provided with a longitudinally movable} andv rotatable crosshead, of a tappet valve, aplurality oftappets. carried by said crosshead,

each tappet being'ada-pted to aline-With sa-idu valve at different rotative positions of the crosshead for operating; said valveupon longitudinal movement oi the crossliead; and;

3. The combination with aspeed governor having a; longitud nallyinovablfe crosshead,

of means for rotating said crosshead com said crosshead; and manuallyrotatable means; connectedfv tohsaidn, blockeforrotating said-r block and thereby saidfcrossli'ead;

5., The combination, with aispeed governor provided with, alongitudinally movable erosshead and having an open ended sl0t,'of a a rotatable block mounted. insaid. slotpand adaptedto; permit longitudinalmovement of said 'crosshead, manually operable means for,

rotating said block andythereby said crosshead, and: meansfor locking said manually, operable-means in different rotative positions."

In testimony whereof I have hereunto set. my hand;

CLYDE C. FARMER. 

